anatomy and physiology mcqs

Question #339

By what mechanism does ranitidine suppress gastric acid production?

Histamine receptor antagonists such as ranitidine and cimetidine act to block the effect of histamine on the H2 receptor expressed on parietal cells, supressing acid secretion.

Proton pump inhibitors such as omeprazole and lansoprazole directly inhibit the H+/K+-ATPase.

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